Here is Irving Koppel's WWII Draft Registration Card:
Also, here is the website where I found Irving Koppel in a photo for the Air Armament School. Irving is #174 in the photo: https://web.archive.org/web/20180901024401/http://goldbergcohenfamily.info/johnkhistory.html
There were two Irving Koppel's from Chicago that enlisted in WWII. The other Irving Koppel was born 1920 in Chicago, so make sure not to mix them up!
I would appreciate any additional information about the Irving Koppel who was born in 1925 in Chicago and his military records.
Dear Ms. DeLeo,
Thank you for posting your request on History Hub!
We suggest that you request a copy of his Official Military Personnel File (OMPF). OMPFs and individual medical reports for enlisted men of the U.S. Army who were separated from the service after October 1912 and before 1959 are in the custody of NARA's National Personnel Records Center (NPRC) in St. Louis. In many cases where personnel records were destroyed in the 1973 fire, proof of service can be provided from other records such as morning reports, payrolls, and military orders, and a certificate of military service will be issued. Please complete a GSA Standard Form 180 and mail it to NARA's National Personnel Records Center, (Military Personnel Records), 1 Archives Drive, St. Louis, MO 63138-1002. For more information see Official Military Personnel Files (OMPF), Archival Records Requests.
Due to the COVID-19 pandemic, the NPRC is closed except for emergencies. Currently, NPRC will continue servicing requests ONLY associated with medical treatments, burials, and homeless veterans seeking admittance to a homeless shelter. If your request is urgent, please see Emergency Requests and Deadlines. Please refrain from submitting non-emergency requests such as replacement medals, administrative corrections, or records research until NPRC returns to pre-COVID staffing levels. Please check archives.gov/veterans for updates to the NPRC operating hours and status. We apologize for any inconvenience.
We hope this is helpful. Best of luck with your research!